CN213004337U - Table type steel ball lapping machine and main shaft structure thereof - Google Patents
Table type steel ball lapping machine and main shaft structure thereof Download PDFInfo
- Publication number
- CN213004337U CN213004337U CN202021921342.4U CN202021921342U CN213004337U CN 213004337 U CN213004337 U CN 213004337U CN 202021921342 U CN202021921342 U CN 202021921342U CN 213004337 U CN213004337 U CN 213004337U
- Authority
- CN
- China
- Prior art keywords
- sleeve
- main shaft
- fixing
- shaft
- spindle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Rolling Contact Bearings (AREA)
Abstract
The utility model discloses a desk-top steel ball lapping machine and main shaft structure thereof, include: the device comprises a main shaft, a shaft sleeve, a first fixing sleeve, a second fixing sleeve, an unloading sleeve and a tensioning pinch roller, wherein the shaft sleeve is sleeved outside the upper part of the main shaft, and the upper part of the main shaft is in transmission connection with a grinding disc or the shaft sleeve; the first fixing sleeve is sleeved outside the lower part of the shaft sleeve, and a first connecting part is arranged at the lower part of the first fixing sleeve; a thrust bearing is arranged between the first fixing sleeve and the grinding disc; a plurality of first bearings are arranged between the first fixed sleeve and the shaft sleeve; the second fixing sleeve is sleeved outside the lower part of the main shaft, and the upper part of the second fixing sleeve is fixedly connected with the lower part of the first fixing sleeve; a second bearing is arranged between the lower part of the first fixed sleeve and the main shaft; the unloading sleeve is fixed on the lower side of the main shaft, and the outer edge of the unloading sleeve is fixed with the tensioning pinch roller. The utility model discloses a gyration precision and the vibration resistance isoparametric of main shaft structure obtain optimizing, have improved stability and machining precision.
Description
Technical Field
The utility model belongs to ball grinder field specifically is a desk-top steel ball grinder and main shaft structure thereof.
Background
The steel ball grinding machine is a key device in the steel ball processing production, grinding agents are arranged between a grinding disc and a steel ball, the grinding disc is pressed, and the steel ball is ground and processed by means of the mechanical and chemical actions of the grinding agents. Among them, the parameters of the main shaft structure of the ball lapping machine, such as rotation precision, rigidity, vibration resistance, etc., are key performance indexes.
In order to solve the problems of reduced precision of the main shaft and bending vibration of the main shaft, in the main shaft structure of some table type steel ball lapping machines in the prior art, a pressure bearing is simply replaced by an angular contact bearing, so that although the dynamic rigidity of the main shaft is improved, the main shaft structure is also negatively influenced by stress support. In addition, the main shaft of the existing ball grinding machine adopts spiral bevel gear direct transmission, which causes the negative influence of vibration on the rotation precision of the main shaft to be larger. Therefore, there is a need for improvement of the existing spindle structure to improve the mechanical performance of the spindle structure and the stability and processing accuracy of the ball grinding machine.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the first object of the present invention is to provide a main shaft structure of a table-type steel ball lapping machine.
The utility model discloses a main shaft structure of desk-top steel ball lapping machine, include: including main shaft, axle sleeve, first fixed cover, the fixed cover of second, off-load cover and tensioning pinch roller, wherein:
the shaft sleeve is sleeved outside the upper part of the main shaft, a fixing hole is formed in the top surface of the shaft sleeve and used for being fixedly connected with the grinding disc, and the upper part of the main shaft is in transmission connection with the grinding disc or the shaft sleeve;
the first fixing sleeve is sleeved on the outer side of the lower part of the shaft sleeve, the lower part of the first fixing sleeve outwards extends to form an annular first connecting part, and the first connecting part is also provided with a plurality of fixing holes for being fixedly connected with a lathe bed of the ball grinding machine; a thrust bearing is arranged between the top surface of the first fixing sleeve and the bottom surface of the grinding disc; a plurality of first bearings are arranged between the first fixed sleeve and the shaft sleeve;
the second fixing sleeve is sleeved on the outer side of the lower part of the main shaft, an annular second connecting part extends outwards from the outer side of the upper part of the second fixing sleeve, corresponding fixing holes are formed in the second connecting part and the bottom of the first fixing sleeve, and the upper part of the second fixing sleeve is fixedly connected with the lower part of the first fixing sleeve by means of a fixing part; a second bearing is arranged between the lower part of the first fixed sleeve and the main shaft;
the unloading sleeve is fixed on the lower side of the main shaft, and the outer edge of the unloading sleeve is fixed with the tensioning pinch roller.
According to a preferred embodiment, the number of the first bearings arranged between the first fixing sleeve and the shaft sleeve is two, the two first bearings are arranged up and down, the first spacer bush is arranged between the two first bearings, and the outer diameter of the middle of the main shaft is matched with the inner diameter of the shaft sleeve.
According to a preferred embodiment, the transmission connection between the upper outer side of the main shaft and the inner wall of the shaft sleeve is realized through a first spline.
Furthermore, a sleeving part extends upwards from the middle part of the unloading sleeve, the sleeving part is sleeved outside the lower part of the main shaft, and the sleeving part is in transmission connection with the lower part of the main shaft through a second spline.
Further, fixing holes are formed in the middle of the upper end of the main shaft and the middle of the grinding disc, and the fixing piece penetrates through the fixing holes in the upper end of the main shaft and the middle of the grinding disc simultaneously to fixedly connect the upper portion of the main shaft and the middle of the grinding disc together; the middle part of the lower end of the main shaft and the middle part of the unloading sleeve are also provided with fixing holes, and the fixing piece penetrates through the fixing holes in the middle parts of the lower end of the main shaft and the lower end of the unloading sleeve simultaneously to fixedly connect the lower part of the main shaft and the middle part of the unloading sleeve together.
According to a preferred embodiment, the tension pinch roller is fixed on the upper side of the outer edge of the unloading sleeve, the tension pinch roller is fixedly connected with the unloading sleeve through a fixing piece, and the tension pinch roller is also sleeved on the outer side of the lower part of the second fixing sleeve; a plurality of third bearings are arranged between the inner side of the tensioning pinch roller and the outer side of the lower part of the second fixed sleeve.
According to a preferred embodiment, the number of the third bearings arranged between the inner side of the tensioning pinch roller and the outer side of the lower part of the second fixing sleeve is two, the two third bearings are arranged up and down, and a second spacer bush is arranged between the two third bearings.
Furthermore, an oil seal is arranged between the main shaft and the second fixing sleeve and is positioned below the second bearing.
Furthermore, a limiting part protruding outwards horizontally is fixed on the outer side of the lower part of the shaft sleeve, the first bearing is located on the upper side of the limiting part, and the limiting part provides support for the inner ring of the first bearing and prevents the first bearing from falling downwards.
The second purpose of the utility model is to provide a desk-top steel ball grinds ball machine, this desk-top steel ball grinds ball machine's main shaft structure be above-mentioned desk-top steel ball grinds ball machine's main shaft structure, and other structures of this desk-top steel ball grinds ball machine are prior art.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the thrust bearing on the upper side of the first fixing sleeve provides support for the grinding disc; the second fixing sleeve is fixedly connected with the first fixing sleeve, and the unloading sleeve is used for indirect transmission, so that the radial load borne by the main shaft is reduced, the main shaft is prevented from being deformed, and the rotation precision and the vibration resistance of the main shaft structure are improved.
2. The main shaft is in transmission connection with the shaft sleeve, the first bearing and the second bearing are arranged between the shaft sleeve and the first fixing sleeve and between the main shaft and the second fixing sleeve, stable rotation among the shaft sleeve, the main shaft, the first fixing sleeve and the second fixing sleeve is guaranteed, and dynamic rigidity of the main shaft is improved.
3. The tensioning pinch roller is arranged on the upper side of the outer edge of the unloading sleeve, so that the structure of the main shaft structure is very compact, the total length of the main shaft is reduced, and the rigidity of the main shaft is improved.
To sum up, the utility model discloses a main shaft structure of desk-top steel ball lapping machine's simple structure, compactness, and its mechanical properties obtains promoting, and stability is high.
Drawings
Fig. 1 is a schematic sectional view of a main shaft structure of a table-type steel ball lapping machine according to an embodiment.
Description of the figure numbers:
10. main shaft, 20, shaft sleeve, 21, first spline.
30. The bearing comprises a first fixing sleeve, 31, a first connecting part, 32, a thrust bearing, 33, a first bearing, 34, a first spacer and 35, wherein the first connecting part extends outwards from the lower part of the first fixing sleeve.
40. A second fixing sleeve 41, a second connecting part extending outwards from the upper part of the second fixing sleeve 42, and a third bearing.
50. Unloading sleeve 51, sleeve joint part in the middle of the unloading sleeve 52, second spline 60, tension pinch roller 70 and grinding disc.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
As shown in fig. 1, the main shaft structure of the table steel ball lapping machine of the present embodiment includes a main shaft 10, a shaft sleeve 20, a first fixing sleeve 30, a second fixing sleeve 40, an unloading sleeve 50, and a tension pinch roller 60.
The shaft sleeve 20 is sleeved on the outer side of the upper portion of the main shaft 10, and a fixing hole is formed in the top surface of the shaft sleeve 20 and is used for being fixedly connected with the grinding disc 70 by means of a fixing member such as a bolt. The upper part of the main shaft 10 is in transmission connection with the grinding disc 70 and the shaft sleeve 20, the grinding disc 70 is fixedly connected with the shaft sleeve 20, and when the main shaft 10 is driven to rotate, the grinding disc 70 and the shaft sleeve 20 are driven to rotate together.
The first fixing sleeve 30 is sleeved on the outer side of the lower portion of the shaft sleeve 20, an annular first connecting portion 31 extends outwards from the lower portion of the first fixing sleeve 30, and a plurality of fixing holes are also formed in the first connecting portion 31 and used for being fixedly connected with a bed body of a ball grinding machine by means of fixing members such as bolts. A thrust bearing 32 is provided between the top surface of the first hub 30 and the bottom surface of the grinding disk 70. The first pouch 30 is secured to the bed by a lower first connection 31 and provides support for the grinding disc 70 by the thrust bearing 32 while allowing rotation between the grinding disc 70 and the first pouch 30. A plurality of first bearings 33 are disposed between the first fixing sleeve 30 and the shaft sleeve 20 to enhance the dynamic stiffness of the main shaft 10 and the shaft sleeve 20. Preferably, the number of the first bearings 33 arranged between the first fixing sleeve 30 and the shaft sleeve 20 is two, the two first bearings 33 are arranged up and down, the first spacer 34 is arranged between the two first bearings 33, and the middle outer diameter (D in the figure) of the main shaft 10 is provided1Shown) and the inner diameter (D in the figure) of the sleeve 201Shown) are matched, and the first spacer 34 connects the two first bearings 33 in series, so as to further strengthen the main shaft 10 and the shaft sleeve20 dynamic stiffness.
The second fixing sleeve 40 is sleeved on the outer side of the lower portion of the main shaft 10, an annular second connecting portion 41 extends outwards from the outer side of the upper portion of the second fixing sleeve 40, corresponding fixing holes are formed in the second connecting portion 41 and the bottom of the first fixing sleeve 30, and the upper portion of the second fixing sleeve 40 is fixedly connected with the lower portion of the first fixing sleeve 30 by means of fixing members such as screws. A second bearing 35 is further disposed between the lower portion of the first fixing sleeve 30 and the main shaft 10, and the second bearing 35 is sleeved on the outer side of the main shaft 10 and the inner side of the lower portion of the first fixing sleeve 30 to enhance the dynamic stiffness of the main shaft 10.
The unloading sleeve 50 is fixed to the lower side of the main shaft 10, and the outer edge of the unloading sleeve 50 is fixed to the tension pinch roller 60. The tension pinch roller 60 is in transmission connection with the motor by means of a transmission belt, acting force is unloaded onto the unloading sleeve 50, the main shaft 10 runs stably, and deformation of the main shaft 10 is small; the belt transmission mode can reduce the vibration of the motor, and the influence of the vibration and acting force generated by gear transmission on the precision of the spindle 10 is avoided.
Preferably, the upper outer side of the main shaft 10 is in transmission connection with the inner wall of the shaft sleeve 20 through a first spline 21, so as to improve the centering accuracy. When the main shaft 10 rotates, the connection structure formed by the first spline 21 drives the shaft sleeve 20 to rotate synchronously, and further drives the grinding disc 70 to rotate.
Further, a sleeving part 51 extends upwards from the middle part of the unloading sleeve 50, the sleeving part 51 is sleeved outside the lower part of the main shaft 10, and the sleeving part 51 is in transmission connection with the lower part of the main shaft 10 through a second spline 52. It is easily understood that the coupling and transmission by means of the spline structure is a conventional technical means in the field, and the skilled person can realize the coupling and transmission by means of the existing spline structure.
Further, fixing holes are formed in the middle of the upper end of the spindle 10 and the middle of the grinding disc 70, and fixing members such as bolts penetrate through the fixing holes in the upper end of the spindle 10 and the middle of the grinding disc 70 at the same time to fixedly connect the upper portion of the spindle 10 and the middle of the grinding disc 70 together. Fixing holes are also formed in the middle of the lower end of the main shaft 10 and the middle of the unloading sleeve 50, and fixing members such as bolts penetrate through the fixing holes in the middle of the lower end of the main shaft 10 and the lower end of the unloading sleeve 50 at the same time to fixedly connect the lower portion of the main shaft 10 and the middle of the unloading sleeve 50 together.
Preferably, the tension pressing wheel 60 is fixed on the upper side of the outer edge of the unloading sleeve 50, and the tension pressing wheel 60 is fixedly connected with the unloading sleeve 50 by a fixing member such as a bolt. Wherein, the tension pinch roller 60 is also sleeved outside the lower part of the second fixing sleeve 40. A third bearing 42 is further arranged between the inner side of the tension pinch roller 60 and the outer side of the lower part of the second fixing sleeve 40. In this embodiment, when the tension pressing wheel 60 is linked with the motor by a belt, the radial load is transmitted to the second fixing sleeve 40 through the third bearing 42, so as to prevent the main shaft 10 from being deformed due to the radial load, and improve the rotation precision of the main shaft 10. Preferably, the number of the third bearings 42 arranged between the inner side of the tension pinch roller 60 and the outer side of the lower portion of the second fixing sleeve 40 is two, two third bearings 42 are arranged up and down, and a second spacer 43 is arranged between the two third bearings 42. The second spacer 43 functions similarly to the first spacer 34, but the primary function of the second spacer 42 to separate the two third bearings 42 is to enable a more uniform transfer of the radial load to the second stationary sleeve 40. The spindle structure of the present embodiment is compact, and compared with the prior art, the overall length of the spindle 10 can be reduced, and the rigidity thereof can be improved.
Further, an oil seal 44 is disposed between the main shaft 10 and the second fixing sleeve 40, and the oil seal 44 is located below the second bearing 35. It will be readily appreciated that the bearing needs to be filled with a certain amount of lubricating oil in use, and therefore the oil seal 44 serves to prevent leakage of lubricating oil downwardly at the second bearing 35.
Further, a limiting portion 22 protruding horizontally and outwardly is fixed on the outer side of the lower portion of the shaft sleeve 20, the first bearing 33 is located on the upper side of the limiting portion 22, and the limiting portion 22 provides support for the inner ring of the first bearing 33, so that limiting and fixing of the first bearing 33 in the vertical direction are achieved, and the first bearing 33 is prevented from falling downwards.
The utility model discloses a table type steel ball lapping machine's main shaft structure's dynamic rigidity obtains promoting, provides the support for lapping the dish 70 through thrust bearing 32, has reduced the load that axle sleeve 20 in the main shaft 10 upper portion outside receives, has improved main shaft structure's stability. Meanwhile, the belt is adopted, and the unloading sleeve 50 is used for indirect transmission, so that the radial load borne by the main shaft 10 is reduced, the main shaft 10 is prevented from being deformed, and the rotation precision and the vibration resistance of the main shaft structure are improved. In addition the utility model discloses still have simple structure, compact advantage, help reducing the length of main shaft 10, improved the rigidity of main shaft 10.
The above embodiments describe in detail the structure of the main shaft structure of the table-type steel ball lapping machine of the present invention, but should not be considered as limiting the present invention. It will be readily understood that modifications, substitutions and further improvements may be made by those skilled in the art based on the teachings of the present invention, but any modifications or equivalents will fall within the scope of the claims of the present invention.
Claims (10)
1. A main shaft structure of a table type steel ball lapping machine is characterized by comprising: including main shaft, axle sleeve, first fixed cover, the fixed cover of second, off-load cover and tensioning pinch roller, wherein:
the shaft sleeve is sleeved outside the upper part of the main shaft, a fixing hole is formed in the top surface of the shaft sleeve and used for being fixedly connected with the grinding disc, and the upper part of the main shaft is in transmission connection with the grinding disc or the shaft sleeve;
the first fixing sleeve is sleeved on the outer side of the lower part of the shaft sleeve, the lower part of the first fixing sleeve outwards extends to form an annular first connecting part, and the first connecting part is also provided with a plurality of fixing holes for being fixedly connected with a lathe bed of the ball grinding machine; a thrust bearing is arranged between the top surface of the first fixing sleeve and the bottom surface of the grinding disc; a plurality of first bearings are arranged between the first fixed sleeve and the shaft sleeve;
the second fixing sleeve is sleeved on the outer side of the lower part of the main shaft, an annular second connecting part extends outwards from the outer side of the upper part of the second fixing sleeve, corresponding fixing holes are formed in the second connecting part and the bottom of the first fixing sleeve, and the upper part of the second fixing sleeve is fixedly connected with the lower part of the first fixing sleeve by means of a fixing part; a second bearing is arranged between the lower part of the first fixed sleeve and the main shaft;
the unloading sleeve is fixed on the lower side of the main shaft, and the outer edge of the unloading sleeve is fixed with the tensioning pinch roller.
2. The main shaft structure of claim 1, wherein the number of the first bearings disposed between the first fixing sleeve and the shaft sleeve is two, the two first bearings are arranged in an up-down manner, and a first spacer is disposed between the two first bearings, and the middle outer diameter of the main shaft matches with the inner diameter of the shaft sleeve.
3. The spindle structure according to claim 1, wherein the transmission connection between the upper outer side of the spindle and the inner wall of the shaft sleeve is realized through a first spline.
4. The spindle structure according to claim 1, wherein a sleeve connection portion extends upward from a middle portion of the unloading sleeve, the sleeve connection portion is sleeved outside a lower portion of the spindle, and the sleeve connection portion is in transmission connection with the lower portion of the spindle through a second spline.
5. The spindle structure according to claim 1, wherein fixing holes are formed in the middle of the upper end of the spindle and the middle of the grinding disc, and the fixing member penetrates through the fixing holes in the upper end of the spindle and the middle of the grinding disc to fixedly connect the upper portion of the spindle and the middle of the grinding disc; the middle part of the lower end of the main shaft and the middle part of the unloading sleeve are also provided with fixing holes, and the fixing piece penetrates through the fixing holes in the middle parts of the lower end of the main shaft and the lower end of the unloading sleeve simultaneously to fixedly connect the lower part of the main shaft and the middle part of the unloading sleeve together.
6. The spindle structure according to claim 1, wherein the tension pinch roller is fixed on the upper side of the outer edge of the unloading sleeve, the tension pinch roller is fixedly connected with the unloading sleeve by a fixing member, and the tension pinch roller is also sleeved on the outer side of the lower portion of the second fixing sleeve; a plurality of third bearings are arranged between the inner side of the tensioning pinch roller and the outer side of the lower part of the second fixed sleeve.
7. The spindle structure according to claim 6, wherein the number of the third bearings provided between the inner side of the tension pinch roller and the outer side of the lower portion of the second fixing sleeve is two, two third bearings are arranged in an up-down manner, and a second spacer is provided between the two third bearings.
8. The spindle structure according to claim 1, wherein an oil seal is disposed between the spindle and the second fixing sleeve, and the oil seal is located below the second bearing.
9. The spindle structure according to claim 1, wherein a stopper portion protruding horizontally outward is fixed to an outer side of a lower portion of the sleeve, the first bearing is located on an upper side of the stopper portion, and the stopper portion provides support for an inner race of the first bearing to prevent the first bearing from falling downward.
10. A table-type steel ball lapping machine characterized in that the main shaft structure of the table-type steel ball lapping machine is the one according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021921342.4U CN213004337U (en) | 2020-09-04 | 2020-09-04 | Table type steel ball lapping machine and main shaft structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021921342.4U CN213004337U (en) | 2020-09-04 | 2020-09-04 | Table type steel ball lapping machine and main shaft structure thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213004337U true CN213004337U (en) | 2021-04-20 |
Family
ID=75474619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021921342.4U Active CN213004337U (en) | 2020-09-04 | 2020-09-04 | Table type steel ball lapping machine and main shaft structure thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213004337U (en) |
-
2020
- 2020-09-04 CN CN202021921342.4U patent/CN213004337U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2005263847B2 (en) | Device for guiding a shaft in an oscillating movement | |
| CN103267100A (en) | Precise self-locking and lifting adjustment device | |
| CN201295866Y (en) | Main shaft of peripheral wheel in numerically controlled slideway grinder | |
| CN102765047B (en) | Hydrostatic rotational supporting component for vertical shafting and grinding and polishing machine | |
| CN213004337U (en) | Table type steel ball lapping machine and main shaft structure thereof | |
| ZA200700209B (en) | Device for guiding a shaft in an oscillating movement | |
| CN109955079B (en) | Unloading mechanism transmission type large-caliber gas static pressure rotary table | |
| CN203471557U (en) | Tapered roller centerless grinding machine double-bearing oil wedge-shaped dynamic pressure main shaft assembly | |
| EP1903230B2 (en) | Rolling bearing apparatus | |
| CN101862078A (en) | Annular rotary table for rotary table top | |
| CN216504336U (en) | Heavy-load high-precision mechanical main shaft structure | |
| CN204525155U (en) | A kind of main shaft of vertical steel ball lapping machine | |
| CN114017621B (en) | Flat harmonic reducer for monitoring cradle head and cradle head | |
| CN2799175Y (en) | Main shaft structure of vertical steel ball finishing machine | |
| US6910955B2 (en) | Rotary drive device of a polishing device | |
| CN201431124Y (en) | Annular turntable of rotating table surface | |
| CN206770396U (en) | A kind of noise reduction, dust-proof deep groove ball bearing | |
| CN217462887U (en) | Bidirectional roller combined bearing assembled on direct-drive vertical mill | |
| CN219026932U (en) | Bearing outer ring deburring equipment | |
| CN210790534U (en) | Grinding power head for vertical double-end-face grinding machine | |
| CN2844556Y (en) | Axial-rotation automatic centering device | |
| CN2793114Y (en) | Self-adjustable entering high-speed spindle with three damping | |
| CN211565477U (en) | Rotary table for numerical control vertical composite grinding machine | |
| CN213319562U (en) | Novel rotary aligning structure | |
| CN113775644A (en) | Bidirectional roller combined bearing assembled on direct-drive vertical mill |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |